Vertically-slidable inwardly-swinging window



March 4, 1930. J. G. KRAMER 1,749,589

VERTICALLY SLIDABLE INWARDLY SWINGING WINDOW Filed June 28, 1928 3Sheets-Sheet l "wunlllll Z i Inventor A ifo rney March 4, 1930. J. G.KRAMER VERTICALLY SLIDABLE INWARDLY SWiNGING WINDOW 3 Sheets-Sheet 2Attorney Filed June 28, 1928 March 4, 1930. J. G. KRAMER VERTICALLYSLIDABLE INWARDLY SWINGING WINDOW Filed June 28. 19,28 3 Sheets-Sheet5 1. 5; "HI HIIEINI w Patented Mar. 4, 1930 UNITED STATES PATENT OFFICEJHN G. KRAMER, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, TOCAR-KRA CORPORATION, OF DETROIT, MICHIGAN, A CORPOR-ATIGN OF MICHIGANVERTICALLY-SLIDABLE INIVARDLY-SWINGING WINDOW Application filed June 28,

My invention relates to an attachment for vertically slidable inwardlyswinging w ndows, whereby the sash may be swung 1nwardly for cleaningthe outer faceof the '51 glass,'or inclined for ventilating purposes,

' as shown in the accompanying drawings and more particularly describedin the following specification and claims.

The problem of cleaning windows 1n large office and department buildingsinvolves considerable annual expense due to the time required and thehazardous nature of the work.

The object of this invention therefore is to provide means wherebyvertically movable window sash may be quickly and readily cleaned fromthe inside of the building, there by greatly reducing the risk incurredby the party cleaning the windows and the time necessary to do the work.

This invention is designed as an improve- .ment on the device shown inmy former Patent, No. 1,628,721, dated May'17th, 1927.

One of the principal objects of the present invention is to provideautomatic latching means whereby the swinging sash -may be automaticallylocked in alignment with Ver tically slidable channel members connectedby sash cords with the usual counter-balance weights.

Another object of the invention is to provide a pair of swinging linkmembers respectively pivoted to members secured to the sides of the sashframe, the free ends of the link members being fitted with an enlargedmanually rotatable head, slidable in slotted ways formed in thevertically movable channel members, for supporting the sash when swunginwardly for ventilation, or for cleaning the outer face of the glass,the construction being such that the swinging arms fold up with the sashand are concealed between the channel bar and side wall of the sashframe when the window is in its normal vertical position.

A further object of the invention is to provide means whereby the sashmay be quickly and readily removed from the window frame and replacedwhen making repairs, or for other purposes.

Another feature of the invention consists in means secured to the wallof the window 1928. Serial No. 238,955.

casing adapted to engage the vertically slidable channel members thatthey may not sag outwardly into the path of the sash frame when thelatter is lowered for cleaning the window and thus interfere with theready return of the sash to its normal vertical position between thechannel members.

l Vith the foregoing and other objects in View which will appear as thedescription proceeds, the invention further resides in the details ofconstruction hereinafter described and claimed, it being understood thatchanges may be made in the precise embodiment of the invention hereindisclosed without departing from the spirit of the same.

In the drawings accompanying this specification:

Figure l is a perspective viewwith parts broken away and insection-showing the lower sash frame supported horizontally between apair of vertically slidable channel members to which the sash ispivoted, and also a spring actuated latch pin carried by the channelmembers engaging an inclined cooperating catch plateindicated in dottedlinessecured to the window casing for holding the channel members inposition to receive the sash when returned to its vertical position.

Figure 2 is a fragmentary elevation of a portion of one of the channelmembers slidable in the window casing,viewed from the inside of thechannel,showing a slot in the channel member to receive the rotatablehead of a swinging link pivoted to the sash for supporting the latterwhen cleaning the glass.

Figure 3 is an enlarged cross-sectional View of a detail of the windowcasing and one of the side bars of the sash frame-taken on or about line22 of Figure 1the sash being in alignment with the window casing and notas indicated in Figure l;showing also the spring actuated pin carried bythe channel member released from the locking catch secured to the windowframe that the channel may be liberated for vertical movement.

Figure 4. is a perspective view of the looking catch secured to thewindow frame.

Figure is a cross-sectional view through the window casing and channelmember through an aperture in the metallic strip secured to the sashframe.

Figure 7 is a fragmentary elevation of the lower or pivotal end of themetallic strip secured to a sash frame,a fragment of the sash framebeing indicated in cross-section broken away to disclose the pivotal endof the metallic strip.

Figure 8 is a vertical longitudinal sectional view through one of theslidable channel members and the metallic .strip secured to the sashframe, showing also a spring actuated bevel-faced latch secured to thechannel member projecting into a slot in the strip carried by the sashframe for normally supporting the sash in vertical alignment with thechannel member. p

Figure 9 is a fragmentary elevation of one of the channel members with aportion broken away to disclose a spring actuated latch pivoted to thewall of the vertically movable channel members, the pin being shownreleased from the locking catch plate secured to the window casing, aswhen the sash is aligned with the channel members for vertical movement.

Figure 10 is a fragmentary perspective view of the window casing showingthe upper end of one of the vertically movable channel members,also afragment of the cooperating metallic strip secured to the window sashand the bevel-faced automatically actuated sprin latch secured to thechannel member adaptee to project through a slot in the upper end of themetallic strip secured to a sash frame to secure the latter in alignmentwith the chan nel members for vertical movement.

Figure 11 is a fragmentary perspective view of a portion of the windowcasing and its spaced stop and parting strips, with one of thevertically slidable channel members lodged between the spaced strips-aportion of the channel member being broken away to disclose a hooksecured to the inner wall of the channel member for engagement with acord secured to the usual sash weightshowing also the metallic stripsecured to the edge of the sash frame tilted, as when swinging the sashfor purposes of ventilation or to a horizontal position for cleaning thewindows.

Referring now to the letters of reference placed upon the drawings:

A denotes a sash frameto which are secured metallic plates B, ribbed asat 13 to stiffen the strips. CC are vertically movable channel memberslodged between the parting strip D and the stop strip E, secured to thestile F of the window casing. The metallic plates B are detachablypivoted at their lower ends upon a pair of pins G, projecting throughapertures in the walls of the vertically movable channel members and themetallic plates secured to the sash frame.

G is a spring secured atg to a plate G attached to the channelmember,the spring at its lower end bearing upon the head of the pin Gwhich is recessed to receive the end of the pin to secure it againstrotation.

HH are hook-shaped plates attached to the. wall of the channel C toreceive an eye attached to the end of the sash cords I, in turnconnected with sash weightsnot shown-for counterbalancing the window.

J denotes a spring actuated latch pivoted at J to the channel wall andprovided at its free end with a pin J extending through an arc-shapedslot J in the wall of the channel member. The spring actuated latchpin'J has an enlarged head J which upon swinging thesash into horizontalpositionas indicated in Figure 1]'is engaged'by the lockinglatch KseeFigure l-the inclined walls K drawing the heads of the pins respectivelytoward the window casing, to overcome any tendency of the channelmembers to sag away from the window stile into the path of the sash whenreturned to its initial position between the channels following thecleaning of the window.

The channel members C are provided with an overlapping flange C spacedfrom the body portion to form a groove C designed" to receive themarginal edge B of the strips B when aligned with the vertically movablechannel members.

- L denotes a spring latch'bar secured at one 5 end to thewall of thechannel 'members, having a beveled-shaped tongue L adapted to enter thealigned slots C in the channel members C, andthe plates B attached tothe sash frame, to lock the sash in vertical alignment with the channelmembers-see Figures 1 and 10.

M M designate link bars for supporting the sash in a horizontal positionfor cleaning the windows,pivoted at one end to the metallic plates Bsecured to the sash frame. The opposite or free ends of the link barsare fitted with rotatable heads M slidable in slotted ways C formed inthe channel mem bers C. The slots 0* in the channel members arerelatively wider at a point preferably mid-way of their length,asindicated at C ,so that upon manually turning the heads the links may bedetached from the channel members,-as indicated in dotted lines inFigure 2.

N denotes a metallic weather strip secured to the sill adapted to entera slot-not shown provided in the lower edge of the sash. lVhen it isdesired to turn the sash horizontally-as shown in Figure 1it must beraised sufiiciently to clear the Weatherstrip N before swinging it intothe position indicated.

P denotes a weather-strip secured to the stile of the window casing andbearing against the wall of the vertically movable channel member.

Q indicates a strip also secured to the window stile overlapping aflange C at the edge of the vertically movable channel member to assistin maintaining the walls of the channel adjacent the stile.

It will be understood that the co-ordinating members of the upper sashare similar to those of the lower sash, and therefore it is notconsidered necessary to duplicate the drawings or description of thesame in order. to convey a complete understanding of the invention.

Having indicated the several parts by reference letters the operation ofthe device will be readily understood.

The sash when in normal position is in alignment with the verticallyslidable channel members CC and is secured in alignment by the springlatch bars L carried by the channel members entering slots provided inthe metallic plates attached to the sides of the sash frame.

When it is desired to turn the sash for cleaning the outer face of theglass, the tongues of the latch bars L are manually released from theengagement with the metallic I plates B of the sash frame that the sashmay be swung into a horizontal position, the link bars M serving tosupport the sash when adjusted for cleaning or ventilating. Upon thesash swinging to a horizontal position the spring actuated latch Jforces the pin J a extending through the arc-shaped slot J 2 in thechannel member into engagement with the locking latches K, secured tothe stiles of the window frame. The channel members CC are thus heldagainst the lifting action of the sash weights connected by cords to thechannel members.

The inclined walls of the locking latches K co-operating with the headsof the pins J assist in maintaining the channel members adjacent to thestiles that the sash may readily return to its initial position betweensaid channel members without interference caused by the latter sagginginto the path of the sash.

The sash being in a horizontal position see Figure 1the glass may bereadily cleaned and upon returning it to its initial position betweenthe channel members, a notch B in the edge of the members B-B secured tothe sash receives the projecting ends of the pins J ,-and forces thepins out of engagement with the locking latch K. The sash when alignedwith the channel members is automatically locked therewith by the latchtongue L and is then adapted to be vertically raised'or 'lowered, asrequired.

If it should be necessary to remove the sash entirely from thechannelmembers for repairs orother purposes, it is first lowered andswung to a horizontal positionsee Figure 1. The pivot pins G supportedin the channel-members and projecting through apertures inthe strips Bare then forced backwardly against. the urge of the springs G out ofengagement with the strips B. The rotatable heads M carried by the linkbars MM are then manually turned as indicated in dotted lines of Figure2 that the links may be detached from the channel ba'rs',-the' sashincluding the links may now be withdrawn from between the channelmembers. "Upon returning the sash to its normal position between thechannels, the pins G again enter the apertures in the plates B under theurge of the springs G when brought'into registration. The rotatableheads M of the link bars are now'inserted through the slotted ways C ofthe channel members and are then turned to couple the parts together.

The sash having been hinged to the channel members C by the pins G, itis swung into vertical alignment with the latter,--it being noted thatthe bolts M carrying the rotatable heads 'M at the end of the link barsconnecting the sash with the channel members, enter the grooves bb in inthe plates B, secured to the side walls of the sash frame.

T 0 provide against the pins G turning in the apertures of therespective channel members, or in the plates attached to the sash frame,the head of the pins are recessed to provide a flat shoulder againstwhich the squared ends of the springs Gr" bear,see Figures 1 and 6.

The sash is automatically locked in vertical alignment between thechannel members by the latch L, when in proper position.

Having thus described my invention what I claim is 1. In a device of thecharacter described, a pair of vertically movable channel members; aswinging sash frame detachably pivoted to the channel members, wherebythe sash frame may be adjusted at an angle to the vertically movablechannel members for cleaning, or removed for repairs; means forautomatically locking the swinging sash frame in alignment with thechannel members for vertical adjustment; a pair of link bars pivoted atone end to the sash frame and fitted with adjustable heads slidable inslots formed in the walls of the channel members,said heads whenadjusted being adapted to release the links from the channel members forthe removal of the sash frame.

2. In a device of the character described, a pair of vertically movablechannel memens; a swinging sash frame detachably pivoted to the channelmembers, whereby the sash may be swung into alignment With thevertically movable channel members or at an angle thereto; means forautomatically lock-' ing the swinging sash frame in alignment With thechannel members for vertical adjustment; and a pair of link bars pivotedat one end to the sash frame and at the other end fitted with manuallyoperable detachable connecting means slidable in slotted I Ways formedinthe channel members and movable to a locking position transversely ofthe slotted ways and positively retaining the connecting means in thesaid slotted Ways and also movable to a position longitudinally of theslotted Ways, whereby the link bars may be disconnected from the channelmembers for the removal of the sash, said link bars being concealedbetween the channel members and the sash frame when locked in verticalslidable relation.

In testimony whereof, 1 I specification.

sign this JoriN e. KRAMER.

